|Reelight magnet and generator on a Nihola.|
Three magnets at a good speed, I'm guessing 25 km/hr, gives almost continuous illumination on a Reelight SL620. It still flickers and does random-looking things, but a human eye wouldn't perceive it as getting dark.
Anyway a final bit about mounting the generator on a Nihola. The steel frame in the rear is fairly thin, and proves somewhat less than ideal grip to the Reelight generator. Its not a big deal, but a few times I've had to adjust it to keep it from rubbing on the magnets.